Default configurations of Apache Shiro have a session fixation vulnerability.

This issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1.

Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue.

In the affected versions, when a session already exists, it is not invalidated upon successful login, nor is a new session being generated with a new ID.

Project Subscriptions

Vendors Products
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 28 May 2026 14:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:apache:shiro:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:shiro:3.0.0:alpha1:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}


Wed, 27 May 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache shiro
Vendors & Products Apache
Apache shiro

Tue, 26 May 2026 13:45:00 +0000

Type Values Removed Values Added
References

Tue, 26 May 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 25 May 2026 20:45:00 +0000

Type Values Removed Values Added
Description Default configurations of Apache Shiro have a session fixation vulnerability. This issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1. Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue. In the affected versions, when a session already exists, it is not invalidated upon successful login, nor is a new session being generated with a new ID.
Title Apache Shiro: Session fixation: new session is not created after login by default
Weaknesses CWE-384
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y/R:U/RE:L/U:Amber'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-05-26T12:39:39.186Z

Reserved: 2026-05-02T22:26:19.626Z

Link: CVE-2026-43827

cve-icon Vulnrichment

Updated: 2026-05-25T21:26:12.053Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-25T21:16:34.700

Modified: 2026-05-28T13:47:12.817

Link: CVE-2026-43827

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T10:05:56Z

Weaknesses